Joachim Peer

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Policies are pervasive in web applications. They play crucial roles in enhancing security, privacy and usability of distributed services. There has been extensive research in the area, including the Semantic Web community, but several aspects still exist that prevent policy frameworks from widespread adoption and real world application. This paper discusses(More)
This paper presents the XML based service markup format SESMA. The proposed language aims to increase the usability of semantic Web service descriptions by presenting a compact syntax, providing convenient support for nondeterministic services and by aligning the annotation format with industry standards like WSDL and BPEL. The present paper describes the(More)
One of the motivations for research in semantic web services is to automatically compose web service operations to solve given problems. The idea of using AI planning software to this end has been suggested by several papers. The present paper follows this approach but argues that the diversity of the web service domains is best addressed by a flexible(More)
This report provides an overview of the existing approaches to logic and rule-based system behavior specification in the light of the peculiar needs of business and security rules. It identifies usage scenarios for rule based policies in a semantic web context and it outlines the possible directions of future research. Keyword List semantic web, reasoning,(More)